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SAFECOM LTD Tel 972-9-7968032 Fax 972-9-7968033
Hanoff St (P.O 132) Herut
40691Israel Herut
E-mail: [email protected]
VoIP, internet/data, and video broadcasting services require high reliability with no “run time” limitations in case of power failure. Traditional power backup solutions that rely on Batteries cannot offer the backup required for network reliability due to their limited operation time.
The DPS Two Way Backup Unit represents the most advanced solution available for power backup. The DPS system is based on the strategic placement of intelligent power management devices throughout the cable network. Protection against power loss due to utility outages is managed by redirecting power between distant locations (on the electricity grid) utilizing the existing coaxial network or power cables.
Typically mounted in pairs, the DPS devices “toggle” available power between two adjacent locations, such as optical nodes, trunk amplifiers, and line extender clusters. Power in the two-way DPS device is redirected from the "normally" powered area to the area subject to power outage. During normal mode of operation, when there is no power outage at either end of the pair, the DPS devices are quiescent (dormant) and act as power blocks to the other side.
DPS's power redundancy protects all optical nodes, trunk amplifiers and line extenders, and is completely “ONLINE”. This ensures no signal or data interruption during operation.
DPS's current measurement capability enables network managers to predict various problems in the network, even before equipment failure. Among the problems detected by DPS monitoring is unstable current, which indicates a defective trunk amplifier or overheating of the power supply. Unstable current can also indicate bad contacts, with safety implications.
The DPS measurement capabilities were developed in cooperation with leading cable operators and according to their specifications. DPS uses a single monitoring connector for all four ports in conjunction with competing products that use four single connectors (one per port). The current measurement performed by DPS has many advantages over competitor monitoring solutions using voltage measurement, which can only indicate on/off status.
Key Advantages Unlimited backup time Better reliability No maintenance costs Ensured broadcast continuity Backup of all networks Low cost Easy installation Environment friendly Easy monitoring Easy UPS integration No municipal licensing required
DPS System Standby & UPS Generators
Backup Unlimited 2-4 hours Long
Cost Low High High
Maintenance None Ongoing Ongoing
7 Outputs
Monitoring
DPS -Power Management Device
הקלד ציטוט מהמסמך או סיכום של [
US Patent 5747888 EP Patent 0708559
SAFECOM LTD Tel 972-9-7968032 Fax 972-9-7968033
Hanoff St (P.O 132) Herut
40691Israel Herut
E-mail: [email protected]
The DPS Return-On-Investment (ROI) is much faster than battery-based solutions since it can be easily installed by the company technician and no further maintenance is needed. DPS is an environmental friendly device that improves reliability and eliminates the cost associated with battery handling.
DPS Technical Specifications
Electrical Environmental
Max Current
(each port) 20A
Operating Humidity 0-100%
Operational Voltage Version 1: 48-75VAC
Range Version 2: 60-90VAC Operating Temperature 13-176 F
Power Consumption
48Vac@50 Hz-1.8W IP Standard IPX8
Must Release 18Vac
RF
Backup-mode
Must Operate 48Vac Shielding effectiveness 130 dB
Current 50Hz/60Hz 39mA / 31mA Hum Modulation see DLPI
Total Rated Voltage 48 to 90 Vac Reference Impedance see DLPI
Release Time 18msec(max) Bandwidth -Via DLPI see DLPI
Mechanical General
Size (L X W X H) 6 x 5 x 3 in Life Expectancy
Weight 1.75 lbs Broadcast Continuity Online
All ports 5/8 "
Monitoring (DPS-Ver-3)
LED's indicators Current from local P.S 0-15A -1%
Two green LED's
ON DPS-Master mode Current from remote P.S 0-15A -1%
Two red LED's ON No power on DPS
Voltage-all ports 0-90V-0.5%
Left LED -red DPS-slave mode
Status of DPS Master/Slave
Right LED-green
* Note DPS is connected to the RF path via a power inserter. DPS alone does not involve the RF signal.
